Global Patent Index - EP 3139343 A1

EP 3139343 A1 20170308 - IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND A PROGRAM

Title (en)

IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND A PROGRAM

Title (de)

BILDVERARBEITUNGSVORRICHTUNG, BILDVERARBEITUNGSVERFAHREN UND PROGRAMM

Title (fr)

APPAREIL DE TRAITEMENT D'IMAGES NUMÉRIQUES, PROCÉDÉ DE TRAITEMENT D'IMAGES NUMÉRIQUES ET PROGRAMME

Publication

EP 3139343 A1 20170308 (EN)

Application

EP 16001768 A 20160809

Priority

JP 2015172088 A 20150901

Abstract (en)

It is possible to adjust brightness of an image for which contrast correction has been performed for each local area. An image processing apparatus that adjusts brightness of a processed image for which contrast correction for removing a scattered light component has been performed for each local area, including: an estimation unit (1014) configured to estimate luminance of the processed image based on luminance of an input image before the contrast correction is performed for each local area and transmittance corresponding to the luminance; a parameter calculation unit (1014) configured to calculate an exposure correction parameter based on the luminance of the input image and the luminance of the processed image estimated by the estimation unit; and an exposure corr0ection unit (1015) configured to perform exposure correction for the processed image by using the exposure correction parameter.

IPC 8 full level

G06T 5/00 (2006.01); H04N 23/76 (2023.01)

CPC (source: CN EP KR US)

G06T 5/73 (2024.01 - EP US); G06T 5/90 (2024.01 - EP US); G06T 5/94 (2024.01 - CN); G06T 7/90 (2017.01 - KR); H04N 23/71 (2023.01 - KR US); H04N 23/73 (2023.01 - KR US); H04N 23/76 (2023.01 - KR); G06T 2207/10024 (2013.01 - EP US); G06T 2207/20012 (2013.01 - EP US)

Citation (applicant)

Citation (search report)

  • [XA] US 2015146980 A1 20150528 - ITOH YASUHIRO [JP], et al
  • [A] US 2014355903 A1 20141204 - SAWADA KEIICHI [JP]
  • [A] EP 2851865 A1 20150325 - SK TELECOM CO LTD [KR], et al
  • [A] EP 2846306 A1 20150311 - SK TELECOM CO LTD [KR], et al
  • [A] JIN-HWAN KIM ET AL: "Single image dehazing based on contrast enhancement", 2011 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING : (ICASSP 2011) ; PRAGUE, CZECH REPUBLIC, 22 - 27 MAY 2011, IEEE, PISCATAWAY, NJ, 22 May 2011 (2011-05-22), pages 1273 - 1276, XP032000977, ISBN: 978-1-4577-0538-0, DOI: 10.1109/ICASSP.2011.5946643
  • [A] HAORAN XU ET AL: "Fast image dehazing using improved dark channel prior", INFORMATION SCIENCE AND TECHNOLOGY (ICIST), 2012 INTERNATIONAL CONFERENCE ON, IEEE, 23 March 2012 (2012-03-23), pages 663 - 667, XP032194003, ISBN: 978-1-4577-0343-0, DOI: 10.1109/ICIST.2012.6221729

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

EP 3139343 A1 20170308; EP 3139343 B1 20190731; CN 106485670 A 20170308; JP 2017050683 A 20170309; JP 6579868 B2 20190925; KR 102058775 B1 20191223; KR 20170027301 A 20170309; US 10027897 B2 20180717; US 2017064177 A1 20170302

DOCDB simple family (application)

EP 16001768 A 20160809; CN 201610797434 A 20160831; JP 2015172088 A 20150901; KR 20160111492 A 20160831; US 201615245339 A 20160824